It exposes information of the object in permissions of Properties, Attributes, Events, etc. Even though the pulldown usage of TypeDescriptor is to get metadata of an object, yet it also exposes features to extend the propagation on the fly. Let us now even few capabilities of Descriptors with a little information about its usage..
The images composing the Gaussian and DoG scale space can then be arranged as in the following figure:. Notice that the scale level index s varies in a slightly redundant set. Once extracted, local extrema are quadratically interpolated this is very important especially at the lower resolution scales in order to have accurate keypoint localization at the full resolution.